Weather strip



Feb.10. 1.925.

. v 1,525,540 J. P. GLASER i WEATHER STRIP yFiled Abril 1.y 1922 ATTORNEY.

Patented Feb. 1o, 192s.

'UNITED Sres-lilas PATENT oFFicE..

.IosErH r. Grasse, or DETROIT, MICHIGAN, AssIeNoa To cHAMBnaLIN METAL WEATHER STRIP- co., or DETROIT, MICHIGAN, A oomoaATIoN or MICHIGAN.

WEATHER STRIP.

, To all whom it may concern:

. Be it known that I, JOSEPH P. GLAsnR. a citizen of the United States, residing at Detroit, county ofWayne, State of Michigan,

.- have invented-.a certain new and useful 1mprovement in Weather Strips, and declare the following tobe a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, referenrebeing had to the accompanying drawings, which ,form a part of this specification.

This invention relates to improvements in weather strips, and the object is to provide 15 a-weather strip for use with sliding window sash or the'like which consists of a body or base provided with a longitudinally extending sealing rib or flange for engaging a coni- 4plementary groove with which the window sash or like structure is provided. A feature of the invention is in the formation of the base or body Vof the weather strip with a shoulder adjacent one edge providing' a guide for the positioning of the weather 26 stripr in the channel ofthe window frame and thereby, without necessity of measurement, to position the sealing rib correctly relative to the groove of the sash. Ordinari 1y the sash to be used with aweather strip I0 of this characteris provided with a groove by the sash manufacturer formed a certain distance from and parallel with the' edge of the sash. With such weather strips heretofore in use and provided with a rib to engage 85 the grove of the sash, much care needs to' be exercised in placing the weather strip in the frame in order that the rib will correspond 'in positionV with the groove of the sash. I have provided a'shoulder or abut- 40 ment at one edge of the strip which engages against the parting strip and thuspositions the rib to properly enter the sash groove and by this arrangement workmen can erect the structure at less expense than hask heretofore e been possible.` Weather strips as heretofore used also have part of the base -of the stripon one side of the sealing rib or flange cerrugated longitudinally providingy contact 'surfaces engaged by the sash to reduce the l frictional `contact between the sash and the weather strip.l While such arrangement is useful I have found that such former weather strlps are not as fully effective in use as is desired, and I have further found that by offsetting the base on one side of the sealing ribwith the upper surface in the same plane as the upper surface of the corrugations of the base on the opposite sideof the sealing rib, possibility offflow Lof air between the sash and the strip is eifectually prevented. 'n

These several novel features and objects oie the invention are hereinafter more .fully described and claimed, and the preferred em-v bodiment thereof i's ,shown in the accompanying drawings in which- Fig. 1 isa cross sectional view showing a portion of a window frame land a slidi'n sash and the preferred form of my improv weather strip as applied thereto.

Fig. 2 is an enlarged end view of my improved weather stri Fig.q3 is aperspective view thereof.

The window frame is indicated at 1. The usualparting strip is indicated at 2 and the usual mouldlng at 3 between which is a runway 4 or groove forv the. sash 5. The sash is provided with a longitudinal oove 6 and the weather strip 7 is preferab y' secured in.

the bottom ofthe runway 4. The strip is formed of sheet metal'l as is usual with this character of-deviceand the body or base is provided with the usual parallel corrugations 8 extending longitudinally ofthe strip on-one side of the ilange or sealing rib 11 and this side ofthe strip may be nailed, as indicated at 9, to the frame. The corrugations 8 provide contact surfaces engaged by the sash and reduce the' frictional contact of the sash with the strip to a minimum and further there is a, half corrugation 10 at the point of connection of the sealing iange or rib 11 with the body 7 of the weather strip which engages the edge of the groove 6 of the sash making a tight joint between that side of the sash and the weather strip havin the corrugations 8. v

- he sealing rib or flange 11 isformed by bending the strip upon Itself intermediate and parallel with the edgesin the form of a e loop which is larger at the edge than at the the groove and to prevent a flow o ciently through the groove and the edge of/the groove contacts the ,longitudinal corrugation 10 to further effect a sealing of the space between the sash and the strip.` t

Strips have heretofore been made with the longitudinal corrugations and sealing rib, and a feature of this invention resides more particularly in the shape of the base on the side opposite that having the corrugations 8 'and 10 and this is to provide an edge 12 to enter a groove formed in the parting strip and forming adjacent the edge 12 a shoulder 13 to provide an offset portion 14 of the base, the upper surface of which is in the same plane as the upper surface of the corrugations 8. This offset por-f tion of the base thus 4contacts the Iedge of the sash for its full width.

With weather strips heretofore made, as above mentioned, there is more or less tendency for air to How in the channels formed between the corrugations and the sash and to escape into the room past the moulding 3 which ordinarily is not very closely positioned to the sash. I avoid this defect by providing the offset portion 14 and shoulder 13. As will be readily understood the runway for the sash is usually of somewhat greater width than the sashand with weather strips heretofore made and provided with the sealing rib or flange, the position of thel rib relative to the parting strip 2 could vary considerably and still allow the sash to be assembled at the frame. This left a space between the sash and parting strip and permitted air to pass into the room through the said ch'annels and over the top of the inner sash of the window. By making the strip as disclosed herein, with the distance between the sealingrib 11 andthe shoulder 13 practically equal to the distance from' the side of the groove 6 of the sash to the face thereof adjacent the parting strip and by the shoulder 13 provlding a guide so that the sealing rib is always readily set the required distance from the A arting strip, I have provided a weather strip that secures 'an effectual sealing of the space between the sash and frame preventing a flow of air from the outside between the parting strip and sealing rib or into the channel between the part l5 of the sash and the weather strip as is possible with Aformer constructions.

As above indica-ted, the function lof thel offset portion 14 is to provide a shoulder 13 with the projecting e ge 12 from the saidl Shoulder to ride ina saw kerf vor. Vgroove in the parting strip. By such structure-the workman, in assembling the strip in the frame, forces this edge 12 of the Aweather strip in the groove provided in the partingl strip, the shoulder limiting the extent that the said edge may be inserted thereby cor# reetly positloning the sealing rib to hold the sash to form a weather tlght joint, 'It

va frame member having ,and sealing rib l1 of the Weather strip.

The opposite edge of the weather strip, which is the edge to be nailed to the frame, may or may not extend fully to the inside moulding 3. The width of the weather strip is not material to this invention.

With my form of strip permitting accurate positioning of the rib as st'ated, a slightly greater surface of the weather strip is in cont-act with' the edge of the sash than with devices heretofore used for this purpose as for instance the device as shown in the U. S. patent to I-I. E. Kenny, No. 786,972. With such former devices there is considerable space between the weather strip fand sash along that edge of the sash between the sealing rib and parting strip of the frame. With my structure this space is sealed and, by raising the said part 14 of the base to the plane occupied by the contact surface of the corrugations 8, I h'ave provided an effectual sealing of the space without any additional cost of manufacture of the weather strip and have secured the further 'advantage in that the strip is'of less cost to erect as there is no necessity of the workman having to carefully measure the position of the rib relative to the stop or parting strip.

Having thus fully described my invention, what I claim is- 1. In combination with a grooved sash and its fra-me, a weather strip consisting of a base having av rib or flange extending lon tudinally thereof and engaging in tlhle groove of the sash, said base on one side of the 4rib having longitudinal corrugations, the opposite side yof the base being offset with the surface thereof in the same plane as the surface of the said corrugations, the offset portion having a shoulder and an outwardly projecting edge in the same lane as the opposite side of the base, the 'side `wall of t e recess forthe sash havin a groove for the said edge of the strip su stantially as and for the purpose described.`

'2. In combination with a grooved sash and a runwa or groove for\ the sash provide with si e walls, a weather strip ,positioned insaid runway comprising a base having an offset portion adjacent one edge 'providing a shoulder, there being a groove in the adjacent side wall of the runway into which the said ed e may be inserted, a longitlidinal rib on e strip engaging the groove of the Sash, said offset portion extending from' the said shoulder to e@ said rib; che remainder of the 130 base on the opplosite side of the rib being positioned in t e same plane as the first mentioned edge, and longitudinal corrugations in the said remaining portion of the base the inner face of which lies in the same plane as the inner face of the offset portion.

3.. A sheet metal weather strip comprising a base member provided intermediate its edges with an integral rib or flange formed by folding the strip upon itself in a loop like form in cross section with the two sides of the hase extending at right angles to the rib, one of said sides being fiat and l ing in a plane above that ofthe other si e, said first side terminating in an edge portion occupying the' same plane as the opposite side, a portion at a right angle to and c0nnecting the edge and the main portion of the said first side providing an abutment.

4. A weather strip consisting of apiece of sheet metal folded upon itself in the form of a loop in cross section intermediate its edges and at practically a right angle to the sheet, the base on one side of the loop portion lyin in a plane below thatbf the other side o the loop portion, the said last side terminating in a shoulder with an outwardly projecting edge in the same plane as the opposite side fof the base.

5; The combination with a Window frame having a runway and a sash for movement i j offset from the said base to contact with the adjacent edge of the sash, an outwardly extending rib member at the junction of the two sides of the base for engaging in the groove of the sash, one of the side walls of the said runway having a` groove and the said sideof the weather strip contracti the sash being formedwith a shoulder agg an outwardly projecting edge to enga e the groove of the said side wall where y the said side of the strip is held in osition in the frame and the rib positione at a predetermined distance from the said side Wall.

In testimony whereof, I sign this specification.

JOSEPH P. GLASER. 

